Moisture/grease being inside a bolt/internal firing pin system, during cold weather, often causes FTF in ALL firearms. It can also often be traced to maintenance error.....as opposed to design flaw.
Very true. Mine was cleaned out good with a degreaser, but I found it hard to keep it scrupulously clean when working 18 hours a day guiding hunters for 60-days straight, most of it in bad weather. Found out real quick it wasn't designed for the use my rifles have to endure.
